Welcome to Ecer
Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
Consent Do not consent
China factories

Chat Now Send Email
China factory - Jiaxing City Qunbang Hardware Co., Ltd

Jiaxing City Qunbang Hardware Co., Ltd

  • China,Jiaxing ,Zhejiang
  • Verified Supplier
  1. Home
  2. Products
  3. About Us
  4. Contact Us

Leave a Message

we will call you back quickly!

Submit Requirement
  1. Home>
  2. Steel Hex Bolt>
  3. ASTM A307A M6 20mm Hex Bolt Carbon Steel Material
China ASTM A307A M6 20mm Hex Bolt Carbon Steel Material
China ASTM A307A M6 20mm Hex Bolt Carbon Steel Material

  1. China ASTM A307A M6 20mm Hex Bolt Carbon Steel Material
  2. China ASTM A307A M6 20mm Hex Bolt Carbon Steel Material

ASTM A307A M6 20mm Hex Bolt Carbon Steel Material

  1. MOQ： 900kg
  2. Price： Negotiation
  3. Get Latest Price
Payment Terms L/C, T/T,OA
Supply Ability 500TON/MONTH
Delivery Time 30days
Packaging Details 25kg Carton+900kg/Pallet
Material Carbon steel
Size 1/4~1-1/2
Surface treatment Plain,Zinc,Black,H.D.G
Grade 2/5/8/10
Process Cold Forging,Hot Forging
Sample Free Sample
Packaging 25kg Carton+900kg/Pallet
Brand Name QBH
Model Number ANSI A307
Certification ISO9001
Place of Origin CHINA

View Detail Information

Inquiry by Email Get Latest Price
Chat online Now Ask for best deal

Explore similar products

  1. China Hot Dip Galvanizing Heavy Hex Head Bolts 10.9 Hr En14399-3 Bolt

    Hot Dip Galvanizing Heavy Hex Head Bolts 10.9 Hr En14399-3 Bolt

    Chat online Now
  2. China Carbon Steel Hex Head Non Standard Machine Thread Bolt Cold / Hot Forging

    Carbon Steel Hex Head Non Standard Machine Thread Bolt Cold / Hot Forging

    Chat online Now
  3. China DIN 914 Customized Stainless Steel Handle Fitting Fastener Furniture Hardware

    DIN 914 Customized Stainless Steel Handle Fitting Fastener Furniture Hardware

    Chat online Now
  4. China DIN980 Stainless Steel Hex Nuts Cold Forging For Industry

    DIN980 Stainless Steel Hex Nuts Cold Forging For Industry

    Chat online Now
  1. Product Details
  2. Company Details

Product Specification

Payment Terms L/C, T/T,OA Supply Ability 500TON/MONTH
Delivery Time 30days Packaging Details 25kg Carton+900kg/Pallet
Material Carbon steel Size 1/4~1-1/2
Surface treatment Plain,Zinc,Black,H.D.G Grade 2/5/8/10
Process Cold Forging,Hot Forging Sample Free Sample
Packaging 25kg Carton+900kg/Pallet Brand Name QBH
Model Number ANSI A307 Certification ISO9001
Place of Origin CHINA
High Light m6 20mm hex bolt ，ASTM A307A m6 20mm hex bolt ，Carbon steel m6 20mm hex bolt

Hex bolts (six sided heads) are the industry standard for fasteners with forged heads. ASTM A307 grade A bolts, all SAE hex bolts, and several other common specifications require a standard (finished) hex head. For specifications such as A307 grade B, A325 and A490 that require a heavy hex pattern, refer to dimensional tolerances for heavy hex bolts or structural bolts.

.

Manufacturing

QBH Bolt manufactures hex bolts from 1/4″ diameter through 3″ diameter in most ASTM, AASHTO, and SAE specifications. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo.

 

 

High-Strength Grade 8 Steel Hex Head Screws

 

Made from Grade 8 steel, these screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. Grade 8 steel hex head screws are marked with six radial lines. Length is measured from under the head.

Zinc yellow-chromate plated steel screws resist corrosion in wet environments. Zinc-aluminum-coated steel screws are about five times as corrosion resistant as zinc yellow-chromate plated screws and have good resistance to salt water and acids. Also known as ultra coat and armor coat. To maintain corrosion resistance, use these screws with zinc-aluminum-coated nuts and washers.

Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance.

Screws that meet ASTM A354BD or SAE J429 comply with specifications and testing requirements for material quality. Screws that meet ASME B18.2.1 or ASME B18.6.3 comply with specifications for dimensional standards.

 

Product name HEX BOLTS
Standard ASTM A307A
Size 3/8"-2"
Class Gr.A
Finish Z.P., B.Z.P.,PLAIN, BLACK, H.D.G., dacromet, geomet, nickle plated, mechanical zinc plated,ect.
Packing bulk/boxes in cartons, bulk in poly bags/-buckets, etc
Pallet solid wood pallet, plywood pallet, ton box/bag, etc.
Mechanical Properties: GB/T 3098.1
Max body length : 800mm/32in

 

 

Screw Thread
d
1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8
PP UNC
UNF
8-UN
ds max
min
s max
min
e max
min
k max
min
r max
min
b L≤6
L＞6
20 18 16 14 13 11 10 9 8 7 7 6
28 24 24 20 20 18 16 14 12 12 12 12
- - - - - - - - - 8 8 8
0.26 0.324 0.388 0.452 0.515 0.642 0.768 0.895 1.022 1.149 1.277 1.404
0.237 0.298 0.36 0.421 0.482 0.605 0.729 0.852 0.976 1.098 1.223 1.345
0.438 0.5 0.562 0.625 0.75 0.938 1.125 1.312 1.5 1.688 1.875 2.062
0.425 0.484 0.544 0.603 0.725 0.906 1.088 1.269 1.45 1.631 1.812 1.994
0.505 0.577 0.650 0.722 0.866 1.083 1.299 1.516 1.732 1.949 2.165 2.382
0.484 0.552 0.620 0.687 0.826 1.033 1.240 1.447 1.653 1.859 2.066 2.273
0.188 0.235 0.268 0.316 0.364 0.444 0.524 0.604 0.7 0.78 0.876 0.94
0.15 0.195 0.226 0.272 0.302 0.378 0.455 0.531 0.591 0.658 0.749 0.81
0.030 0.030 0.030 0.030 0.030 0.060 0.060 0.060 0.090 0.090 0.090 0.090
0.010 0.010 0.010 0.010 0.010 0.020 0.020 0.020 0.030 0.030 0.030 0.030
0.7500 0.8750 1.0000 1.1250 1.2500 1.5000 1.7500 2.0000 2.2500 2.5000 2.7500 3.0000
1.0000 1.1250 1.2500 1.3750 1.5000 1.7500 2.0000 2.2500 2.5000 2.7500 3.0000 3.2500

 

Screw Thread
d
1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/2 2-3/4 3 3-1/4 3-1/2 3-3/4 4
PP UNC
UNF
8-UN
ds max
min
s max
min
e max
min
k max
min
r max
min
b L≤6
L＞6
6 - 5 - 4-1/2 4 4 4 4 4 4 4
12 - - - - - - - - - - -
8 8 8 8 8 8 8 8 8 8 8 8
1.531 1.658 1.785 1.912 2.039 2.559 2.827 3.081 3.335 3.589 3.858 4.111
1.47 1.591 1.716 1.839 1.964 2.461 2.711 2.961 3.21 3.461 3.726 3.975
2.25 2.438 2.625 2.812 3 3.75 4.125 4.5 4.875 5.25 5.625 6
2.175 2.356 2.538 2.719 2.9 3.625 3.988 4.35 4.712 5.075 5.437 5.8
2.598 2.815 3.031 3.248 3.464 4.330 4.763 5.196 5.629 6.062 6.495 6.928
2.480 2.616 2.893 3.099 3.306 4.133 4.546 4.959 5.372 5.786 6.198 6.612
1.036 1.116 1.196 1.276 1.388 1.708 1.869 2.06 2.251 2.38 2.572 2.764
0.902 0.978 1.054 1.13 1.175 1.479 1.632 1.815 1.936 2.057 2.241 2.424
0.090 0.090 0.120 0.120 0.120 0.190 0.190 0.190 0.190 0.190 0.190 0.190
0.030 0.030 0.040 0.040 0.040 0.060 0.060 0.060 0.060 0.060 0.060 0.060
3.2500 3.5000 3.7500 4.0000 4.2500 5.2500 5.7500 6.2500 6.7500 7.2500 7.7500 8.2500
3.5000 3.7500 4.0000 4.2500 4.5000 5.5000 6.0000 6.5000 7.0000 7.5000 8.0000 8.5000

 

 

 

 

 

Mechanical property :SAEJ429

 

 

Process flow

Cold forging

Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ thread rolling ➨make heat treatment(if need) ➨ Finish ➨ Packing

 

Hot forging

Cutting material ➨ hot forging ➨ turning ➨ shrink diameter(half thread) ➨thread rolling ➨ make heat treatment(if need) ➨ Finish ➨ Packing

 

 

 

 

 

Product Grade

 

Grade2 Grade5 Grade8

 

 

Materials and Chemical compstition

 

 

 

1008

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Al
0.06 0.06 0.33 0.013 0.003 0.01 0 0.01 0.028

 

 

1035

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.34 0.13 0.73 0.012 0.002 0.02 0.01 0.02

 

 

10B21

CHEMICAL COMPOSI %
C Si Mn P S Cr B
0.2 0.04 0.81 0.017 0.007 0.017 0.0021

 

 

1045

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.45 0.23 0.58 0.014 0.006 0.057 0.008 0.016

 

40CR

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.4 0.21 0.54 0.015 0.008 0.95 0.02 0.02

 

35CRMO

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Mo
0.35 0.22 0.59 0.01 0.003 0.93 0.01 0.01 0.21

 

 

42CRMO

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Mo
0.42 0.27 0.92 0.013 0.004 1.01 0.03 0.04 0.2

 

Our Services

Professional Manufacturer: All of our Fastener are designed and manufactured according to buyers'
specification and performance.
Quality is guaranteed: Durability testing and critical technical design to enhance fasteners lifetime.
Cost effective: Competitive prices with professional factory supply
Perfect fastening solution with 15+ years experiences to solve your problem: Wide range of parts selection.
Customized Ideal Fasteners: customized services according to the samples and drawings offered.

Free Samples for Standard Fastener from Jiaxing City Qunbang Hardware
We Promise:
1.High quality
2. Competitive price
3. The shortest delivery
4. The fastest response
5. The best service

 

FAQ

1. How do you let me trust you.
Jiaxing City Qunbang Hardware Co.,ltd hs its own right of import and export,QBH trademark in China,United States,European Union have been registered.At the same time,you can also check the registration information of our company in the China industry and Commerce system.
 
2. How about your price.
We will be based on different markets,for different quality and quantity,tailor-made prices for customers,in order to achieve win-win goal.
 
3. How do you control your quality.
Incoming quality contral( IQC)→Process Quality control(PQC)→Output quality control(OQC),and the random samples is sent to TUV for testing.If the customer received the goods and found quality problems,QBH company promises to be responsible for returning money or replenishing the goods
 
4. Could you provide free samples?
For new customer, We can provide free samples for standard fastener, But the clients will pay the express
charges. For old customer, We will send you free samples and pay express charges by ourself.
 
5. Do you accept small order?
QBH company can accept small orders if we have them in stock.Generally speaking,the stock probability of stainless steel fasteners is higher than that of carbon steel fasteners.
 
6. How about your delivery time
What we pursure is the high efficiency movement pattern,the stainless steel fastener delivery time about 15days,the carbon steel fastener will it about 30days
 
7. What is your packing.
Usually 25KG/carbon,36CTNS on the pallets,or 20-30kg/Bags,then on the pallet,QBH company personalized packagingis also available,like 10PCS/plastic bag or 10pcs/box,it can print some information
such as LOGO and pattern of customers.
 
8. What is your payment term
Normally,our terms of payment are TT and L/C,if we cooperate for a long time,we can reach the point of mutual trust,and fully support our customers to become bigger and stronger in the local market.
Not only in the price concessions,but also in the payment can also be made on credit,Specific credit sales time needs to be negotiated separately.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Manufacturer,Trading Company,Seller

  • Year Established:

    2014

  • Total Annual:

    3000-4500

  • Employee Number:

    100~150

  • Ecer Certification：

    Verified Supplier

     Jiaxing City Qunbang Hardware Co,ltd is a productiondesignsales and after-sales as one of the fasteners business,The company is located in HangjiaHu Plain,close to ShanghaiNingboZhapu ports.The geographical position is superior,the transportation is convenient,has created the nat...      Jiaxing City Qunbang Hardware Co,ltd is a productiondesignsales and after-sales as one of the fasteners business,The company is located in HangjiaHu Plain,close to ShanghaiNingboZhapu ports.The geographical position is superior,the transportation is convenient,has created the nat...

+ Read More

Get in touch with us

  • Reach Us
  • Jiaxing City Qunbang Hardware Co., Ltd
  • No.375,Tongle Road,Jiaxing City,Zhejiang Province,China
  • https://www.steelnutbolts.com/

Leave a Message, we will call you back quickly!

Email

Check your email

Phone Number

Check your phone number

Requirement Details

Your message must be between 20-3,000 characters!

Submit Requirement

Trade Alert - Delivering the latest product trends and industry news straight to your inbox.

Home Categories About Us
RFQ Report IPR products Privacy Policy Sitemap

© 2025 Chinax.com. All rights reserved.